Answer: passerby

AnswerCrossword Clue
PASSERBYWitness, maybe
PASSERBYWitness, perhaps
PASSERBYWindow shopper
PASSERBYMan on the street.
PASSERBYSidewalk user
PASSERBYMan in the street
PASSERBYAccident witness, often
PASSERBYRandom witness
PASSERBYWitness by chance
PASSERBYOnlooker
passerbyA person who happens to be going past something, esp. on foot
passerbyone who passes by